flipperzero-firmware/lib/subghz/protocols/star_line.c

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#include "star_line.h"
#include "keeloq_common.h"
#include "../subghz_keystore.h"
#include <m-string.h>
#include <m-array.h>
#include "../blocks/const.h"
#include "../blocks/decoder.h"
#include "../blocks/encoder.h"
#include "../blocks/generic.h"
#include "../blocks/math.h"
#define TAG "SubGhzProtocolStarLine"
static const SubGhzBlockConst subghz_protocol_star_line_const = {
.te_short = 250,
.te_long = 500,
.te_delta = 120,
.min_count_bit_for_found = 64,
};
struct SubGhzProtocolDecoderStarLine {
SubGhzProtocolDecoderBase base;
SubGhzBlockDecoder decoder;
SubGhzBlockGeneric generic;
uint16_t header_count;
SubGhzKeystore* keystore;
const char* manufacture_name;
};
struct SubGhzProtocolEncoderStarLine {
SubGhzProtocolEncoderBase base;
SubGhzProtocolBlockEncoder encoder;
SubGhzBlockGeneric generic;
};
typedef enum {
StarLineDecoderStepReset = 0,
StarLineDecoderStepCheckPreambula,
StarLineDecoderStepSaveDuration,
StarLineDecoderStepCheckDuration,
} StarLineDecoderStep;
const SubGhzProtocolDecoder subghz_protocol_star_line_decoder = {
.alloc = subghz_protocol_decoder_star_line_alloc,
.free = subghz_protocol_decoder_star_line_free,
.feed = subghz_protocol_decoder_star_line_feed,
.reset = subghz_protocol_decoder_star_line_reset,
.get_hash_data = subghz_protocol_decoder_star_line_get_hash_data,
.serialize = subghz_protocol_decoder_star_line_serialize,
.deserialize = subghz_protocol_decoder_star_line_deserialize,
.get_string = subghz_protocol_decoder_star_line_get_string,
};
const SubGhzProtocolEncoder subghz_protocol_star_line_encoder = {
.alloc = NULL,
.free = NULL,
.deserialize = NULL,
.stop = NULL,
.yield = NULL,
};
const SubGhzProtocol subghz_protocol_star_line = {
.name = SUBGHZ_PROTOCOL_STAR_LINE_NAME,
.type = SubGhzProtocolTypeDynamic,
.flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable,
.decoder = &subghz_protocol_star_line_decoder,
.encoder = &subghz_protocol_star_line_encoder,
};
void* subghz_protocol_decoder_star_line_alloc(SubGhzEnvironment* environment) {
SubGhzProtocolDecoderStarLine* instance = malloc(sizeof(SubGhzProtocolDecoderStarLine));
instance->base.protocol = &subghz_protocol_star_line;
instance->generic.protocol_name = instance->base.protocol->name;
instance->keystore = subghz_environment_get_keystore(environment);
return instance;
}
void subghz_protocol_decoder_star_line_free(void* context) {
furi_assert(context);
SubGhzProtocolDecoderStarLine* instance = context;
free(instance);
}
void subghz_protocol_decoder_star_line_reset(void* context) {
furi_assert(context);
SubGhzProtocolDecoderStarLine* instance = context;
instance->decoder.parser_step = StarLineDecoderStepReset;
}
void subghz_protocol_decoder_star_line_feed(void* context, bool level, uint32_t duration) {
furi_assert(context);
SubGhzProtocolDecoderStarLine* instance = context;
switch(instance->decoder.parser_step) {
case StarLineDecoderStepReset:
if(level) {
if(DURATION_DIFF(duration, subghz_protocol_star_line_const.te_long * 2) <
subghz_protocol_star_line_const.te_delta * 2) {
instance->decoder.parser_step = StarLineDecoderStepCheckPreambula;
instance->header_count++;
} else if(instance->header_count > 4) {
instance->decoder.decode_data = 0;
instance->decoder.decode_count_bit = 0;
instance->decoder.te_last = duration;
instance->decoder.parser_step = StarLineDecoderStepCheckDuration;
}
} else {
instance->header_count = 0;
}
break;
case StarLineDecoderStepCheckPreambula:
if((!level) && (DURATION_DIFF(duration, subghz_protocol_star_line_const.te_long * 2) <
subghz_protocol_star_line_const.te_delta * 2)) {
//Found Preambula
instance->decoder.parser_step = StarLineDecoderStepReset;
} else {
instance->header_count = 0;
instance->decoder.parser_step = StarLineDecoderStepReset;
}
break;
case StarLineDecoderStepSaveDuration:
if(level) {
if(duration >= (subghz_protocol_star_line_const.te_long +
subghz_protocol_star_line_const.te_delta)) {
instance->decoder.parser_step = StarLineDecoderStepReset;
if(instance->decoder.decode_count_bit >=
subghz_protocol_star_line_const.min_count_bit_for_found) {
if(instance->generic.data != instance->decoder.decode_data) {
instance->generic.data = instance->decoder.decode_data;
instance->generic.data_count_bit = instance->decoder.decode_count_bit;
if(instance->base.callback)
instance->base.callback(&instance->base, instance->base.context);
}
}
instance->decoder.decode_data = 0;
instance->decoder.decode_count_bit = 0;
instance->header_count = 0;
break;
} else {
instance->decoder.te_last = duration;
instance->decoder.parser_step = StarLineDecoderStepCheckDuration;
}
} else {
instance->decoder.parser_step = StarLineDecoderStepReset;
}
break;
case StarLineDecoderStepCheckDuration:
if(!level) {
if((DURATION_DIFF(instance->decoder.te_last, subghz_protocol_star_line_const.te_short) <
subghz_protocol_star_line_const.te_delta) &&
(DURATION_DIFF(duration, subghz_protocol_star_line_const.te_short) <
subghz_protocol_star_line_const.te_delta)) {
subghz_protocol_blocks_add_bit(&instance->decoder, 0);
instance->decoder.parser_step = StarLineDecoderStepSaveDuration;
} else if(
(DURATION_DIFF(instance->decoder.te_last, subghz_protocol_star_line_const.te_long) <
subghz_protocol_star_line_const.te_delta) &&
(DURATION_DIFF(duration, subghz_protocol_star_line_const.te_long) <
subghz_protocol_star_line_const.te_delta)) {
subghz_protocol_blocks_add_bit(&instance->decoder, 1);
instance->decoder.parser_step = StarLineDecoderStepSaveDuration;
} else {
instance->decoder.parser_step = StarLineDecoderStepReset;
}
} else {
instance->decoder.parser_step = StarLineDecoderStepReset;
}
break;
}
}
/**
* Validation of decrypt data.
* @param instance Pointer to a SubGhzBlockGeneric instance
* @param decrypt Decrypd data
* @param btn Button number, 4 bit
* @param end_serial decrement the last 10 bits of the serial number
* @return true On success
*/
static inline bool subghz_protocol_star_line_check_decrypt(
SubGhzBlockGeneric* instance,
uint32_t decrypt,
uint8_t btn,
uint32_t end_serial) {
furi_assert(instance);
if((decrypt >> 24 == btn) && ((((uint16_t)(decrypt >> 16)) & 0x00FF) == end_serial)) {
instance->cnt = decrypt & 0x0000FFFF;
return true;
}
return false;
}
/**
* Checking the accepted code against the database manafacture key
* @param instance Pointer to a SubGhzBlockGeneric* instance
* @param fix Fix part of the parcel
* @param hop Hop encrypted part of the parcel
* @param keystore Pointer to a SubGhzKeystore* instance
* @param manufacture_name
* @return true on successful search
*/
static uint8_t subghz_protocol_star_line_check_remote_controller_selector(
SubGhzBlockGeneric* instance,
uint32_t fix,
uint32_t hop,
SubGhzKeystore* keystore,
const char** manufacture_name) {
uint16_t end_serial = (uint16_t)(fix & 0xFF);
uint8_t btn = (uint8_t)(fix >> 24);
uint32_t decrypt = 0;
uint64_t man_normal_learning;
for
M_EACH(manufacture_code, *subghz_keystore_get_data(keystore), SubGhzKeyArray_t) {
switch(manufacture_code->type) {
case KEELOQ_LEARNING_SIMPLE:
//Simple Learning
decrypt = subghz_protocol_keeloq_common_decrypt(hop, manufacture_code->key);
if(subghz_protocol_star_line_check_decrypt(instance, decrypt, btn, end_serial)) {
*manufacture_name = string_get_cstr(manufacture_code->name);
return 1;
}
break;
case KEELOQ_LEARNING_NORMAL:
// Normal_Learning
// https://phreakerclub.com/forum/showpost.php?p=43557&postcount=37
man_normal_learning =
subghz_protocol_keeloq_common_normal_learning(fix, manufacture_code->key);
decrypt = subghz_protocol_keeloq_common_decrypt(hop, man_normal_learning);
if(subghz_protocol_star_line_check_decrypt(instance, decrypt, btn, end_serial)) {
*manufacture_name = string_get_cstr(manufacture_code->name);
return 1;
}
break;
case KEELOQ_LEARNING_UNKNOWN:
// Simple Learning
decrypt = subghz_protocol_keeloq_common_decrypt(hop, manufacture_code->key);
if(subghz_protocol_star_line_check_decrypt(instance, decrypt, btn, end_serial)) {
*manufacture_name = string_get_cstr(manufacture_code->name);
return 1;
}
// Check for mirrored man
uint64_t man_rev = 0;
uint64_t man_rev_byte = 0;
for(uint8_t i = 0; i < 64; i += 8) {
man_rev_byte = (uint8_t)(manufacture_code->key >> i);
man_rev = man_rev | man_rev_byte << (56 - i);
}
decrypt = subghz_protocol_keeloq_common_decrypt(hop, man_rev);
if(subghz_protocol_star_line_check_decrypt(instance, decrypt, btn, end_serial)) {
*manufacture_name = string_get_cstr(manufacture_code->name);
return 1;
}
//###########################
// Normal_Learning
// https://phreakerclub.com/forum/showpost.php?p=43557&postcount=37
man_normal_learning =
subghz_protocol_keeloq_common_normal_learning(fix, manufacture_code->key);
decrypt = subghz_protocol_keeloq_common_decrypt(hop, man_normal_learning);
if(subghz_protocol_star_line_check_decrypt(instance, decrypt, btn, end_serial)) {
*manufacture_name = string_get_cstr(manufacture_code->name);
return 1;
}
man_normal_learning = subghz_protocol_keeloq_common_normal_learning(fix, man_rev);
decrypt = subghz_protocol_keeloq_common_decrypt(hop, man_normal_learning);
if(subghz_protocol_star_line_check_decrypt(instance, decrypt, btn, end_serial)) {
*manufacture_name = string_get_cstr(manufacture_code->name);
return 1;
}
break;
}
}
*manufacture_name = "Unknown";
instance->cnt = 0;
return 0;
}
/**
* Analysis of received data
* @param instance Pointer to a SubGhzBlockGeneric* instance
* @param keystore Pointer to a SubGhzKeystore* instance
* @param manufacture_name
*/
static void subghz_protocol_star_line_check_remote_controller(
SubGhzBlockGeneric* instance,
SubGhzKeystore* keystore,
const char** manufacture_name) {
uint64_t key = subghz_protocol_blocks_reverse_key(instance->data, instance->data_count_bit);
uint32_t key_fix = key >> 32;
uint32_t key_hop = key & 0x00000000ffffffff;
subghz_protocol_star_line_check_remote_controller_selector(
instance, key_fix, key_hop, keystore, manufacture_name);
instance->serial = key_fix & 0x00FFFFFF;
instance->btn = key_fix >> 24;
}
uint8_t subghz_protocol_decoder_star_line_get_hash_data(void* context) {
furi_assert(context);
SubGhzProtocolDecoderStarLine* instance = context;
return subghz_protocol_blocks_get_hash_data(
&instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
}
bool subghz_protocol_decoder_star_line_serialize(
void* context,
FlipperFormat* flipper_format,
SubGhzPresetDefinition* preset) {
furi_assert(context);
SubGhzProtocolDecoderStarLine* instance = context;
subghz_protocol_star_line_check_remote_controller(
&instance->generic, instance->keystore, &instance->manufacture_name);
bool res = subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
if(res && !flipper_format_write_string_cstr(
flipper_format, "Manufacture", instance->manufacture_name)) {
FURI_LOG_E(TAG, "Unable to add manufacture name");
res = false;
}
return res;
}
bool subghz_protocol_decoder_star_line_deserialize(void* context, FlipperFormat* flipper_format) {
furi_assert(context);
SubGhzProtocolDecoderStarLine* instance = context;
bool res = false;
do {
if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) {
FURI_LOG_E(TAG, "Deserialize error");
break;
}
res = true;
} while(false);
return res;
}
void subghz_protocol_decoder_star_line_get_string(void* context, string_t output) {
furi_assert(context);
SubGhzProtocolDecoderStarLine* instance = context;
subghz_protocol_star_line_check_remote_controller(
&instance->generic, instance->keystore, &instance->manufacture_name);
uint32_t code_found_hi = instance->generic.data >> 32;
uint32_t code_found_lo = instance->generic.data & 0x00000000ffffffff;
uint64_t code_found_reverse = subghz_protocol_blocks_reverse_key(
instance->generic.data, instance->generic.data_count_bit);
uint32_t code_found_reverse_hi = code_found_reverse >> 32;
uint32_t code_found_reverse_lo = code_found_reverse & 0x00000000ffffffff;
string_cat_printf(
output,
"%s %dbit\r\n"
"Key:%08lX%08lX\r\n"
"Fix:0x%08lX Cnt:%04X\r\n"
"Hop:0x%08lX Btn:%02lX\r\n"
"MF:%s\r\n"
"Sn:0x%07lX \r\n",
instance->generic.protocol_name,
instance->generic.data_count_bit,
code_found_hi,
code_found_lo,
code_found_reverse_hi,
instance->generic.cnt,
code_found_reverse_lo,
instance->generic.btn,
instance->manufacture_name,
instance->generic.serial);
}